Differential Diagnosis of Depression

Psychiatric Disorders
Adjustment disorders
Alcohol/substance abuse/dependence
Anxiety disorders
Eating disorders
Major Depression, Dysthymia
Schizophrenia and Schizophreniform disorders
Somatoform disorders
Neurologic disorders
Extrapyramidal diseases (e.g., Parkinson's, Huntington's, Progressive Supranuclear Palsy)
Dementia (Alzheimer's, Pick’s, vascular)
Cerebral neoplasms
Cerebral trauma
Cerebrovascular disease
CNS infections (e.g., neurosyphilis, viral encephalitis, AIDS)
Seizure Disorders
Hydrocephalus
Migraine
Multiple sclerosis
Narcolepsy
Sleep Apnea
Wilson's disease
Endocrine disorders
Adrenal diseases (Cushing's, Addison's, Hyperaldosteronism)
Hypo- or hyperparathyroidism
Hypo- or hyperthyroidism
Premenstrual Dysphoric Disorder
Post-partum disorders
Inflammatory disorders
Rheumatoid arthritis
Sj�gren's syndrome
Systemic lupus erythematosus (SLE)
Temporal arteritis
Infections
AIDS
Hepatitis
Tuberculosis
Mononucleosis
Vitamin deficiencies
Folate
Niacin
Thiamine
Vitamin B12
Vitamin C
Other disorders
Cancer
Cardiopulmonary disease
Klinefelter's syndrome
Porphyria
Postoperative mood disorders
Renal insufficiency and uremia

Medications
-Cardiac and Antihypertensive drugs
Bethanidine
Clonidine
Digitalis
Guanethidine
Hydralazine
Lidocaine
Methoserpidine
Methyldopa
Oxprenolol
Prazosin
Procainamide
Propranolol
Reserpine
Veratrum
-Sedatives and hypnotics
Atypical Antipsychotics
Barbiturates
Benzodiazepines
Butyrophenones
Chloral hydrate
Ethanol
Phenothiazines
-Steroids and other hormones
Corticosteroids
Danazol
Oral contraceptives
-Stimulants and appetite suppressants
Amphetamines
Diethylpropion
Fenfluramine
Phenmetrazine
-Neurological agents
Amantadine
Baclofen
Bromocriptine
Carbamazepine
Levodopa
Methsuximide
Phenytoin
Tetrabenazine
-Analgesics and anti-inflammatory drugs
Benzydamine
Fenoprofen
Ibuprofen
Indomethacin
Opiates
Phenacetin
Phenylbutazone
Pentazocine
-Antibacterial, antiviral, and antifungal drugs
Ampicillin
Clotrimazole
Cycloserine
Dapsone
Ethionamide
Griseofulvin
Interferon
Metronidazole
Nalidixic acid
Sulfonamides
Streptomycin
Tetracycline
Trimethoprim
Zidovudine
-Antineoplastics
L-Asparaginase
Azidouridine
Bleomycin
Plicamycin
Vincristine
-Miscellaneous drugs
Acetazolamide
Anticholinesterases
Choline
Cimetidine
Cyproheptadine
Diphenoxylate
Disulfiram
Isotretinoin
Lysergide
Mebeverine
Meclizine
Methysergide
Metoclopramide
Salbutamol